Stop mechanism for card-setting machines



(No Model.)

H. BISGO. STOP MECHANISM FOR CARD SETTING MAGHINES.

Patented Apr. 4,

} UNITED STATES PATENT OFFICE.

HENRY BISOO, OF LEICESTER, MASSACHUSETTS.

STOP MECHANISM FOR CARD-SETTING MACHINES.

SPECIFICATION forming part of Letters Patent No. 494,774, dated April 4, 1893.

Application filed July 26, 1892. Serial No. 441,093- (No model.)

.To all whom it may concern.-

Be it known that I, HENRY BISCO, a citizen of the United States, residing at Leicester, in the county of Worcester, and State of Massa- 5 chusetts, have invented a new and useful Improvement in Stop Mechanism for Card-Setting Machines, of which the following, together with the accompanying drawings, is a specification sufficiently full, clear, and exact to enable persons skilled in the art to which this invention appertains to make and use the same.

The object of my invention is to provide,in connection with the feelers, stop-fingers, and

r the bending devices in a card-setting machine, an efficient means for throwing the feelers completely, and quickly away from the card-tooth at the instant the tooth commences to bend under the action of the die, or as soon as it is ascertained that the tooth is in posi- -tion5 thereby avoiding liability of nipping, or double-bending the tooth, or making imperfections of that class known as shiners.

Another object is to so adapt the feelers and 2 5 stop-device, in a card-setting machine, that irregularities in the length of the teeth set into the clothing will be detected and the mechanism stopped whenever the tooth-wire is deficient in length, thus preventing the 0 making of short teeth, rendering the machine more perfect in its working, and avoiding the common necessity of withdrawing such short teeth and resetting by hand; also, rendering the card face more uniform and in condition 3 5 to be quicker and more easily ground.

For the attainment of these objects my invention consists in combining with the stop finger and feelers a movable plate or lever having an inclined surface that engages the stop-finger, or a lug thereon, as the bending dies are depressed; and if the tooth is in persume their original positions as the bendingdie is elevated for receiving another tooth.

1 Another feature of my invention consists in arranging the feeler at the back of the' bending die and operating the same as herein set forth for the detection of short length teeth.

In the drawings, Figure 1 is a side view'of such portions of a card-setting machine as will illustrate the nature of my invention. Fig. 2 is a plan view of the same. Fig. 3 is a vertical section at the position of line m-x on Fig. 2. Fig. 4 shows the back and edge of the throw-off plateor lever. Fig. 5 is a section diagram [on larger scale] showing the form and relation of the inclined end of the throw-off plate and the stop-finger-lug for engagement therewith. Fig. 6 is a front view of the bending-dies and feeler ends. Fig. 7 is a plan diagram of the dies, feelers, and rest illustrating the manner in which a short tooth is detected, and Fig. 8 shows a form of spring used for 7 advancing the inclined ends of the throwoif.

Referring to parts, A denotes the rockerhead pivoted at a, and carrying the arms 13, upon the ends of which are fixed the bending devices or dies 7); and 0 indicates the rest over which the teeth are bent by downward swing of said arms and dies.

D indicates the punch and driver; E the crown and d the doubler-bar which together serve as the inserting tools.

e 6 indicate the wings that fold the wire around the doubling-bar to shape the tooth, and G is the head of the trip-bar for operat- 85 ing the shipper or mechanism whereby the motion of the machine is arrested.

All of the above named parts are of the usual well-known construction and operation and need not therefore be more fully herein described.

It will also be understood that parts of the machine which are not herein shown can be of the usual well-known construction.

The stop-fingers F, having the feelers m 5 mounted therein as shown, are pivoted at 5 to swing freely on the sides of the upwardly extended parts B on the arms B, their dependent ends f being adjacent to the trip head G, and their upper ends drawn back- [Q0 the pivotal axis 5. A movable plate or lever I, which I term the throw-off, fitted with a backwardly inclined surface i at its lower end, [see Figs. 4 and 5] is pivoted at J and supported on the frontof the upright- B in such position that its inclined surface 2 will engage with or slide ontothelug n and swing back thefinger F when said inclined end of the throw-off I is advanced or moved outward. Said throw-off plates or levers I are arranged right and left on the respective bars B, one for each of the stop-fingers, [see Fig. 3] and the top portions are rounded or fitted with a cam surface 2' [see Fig. at] suitable for engagement witha pin or stationary guard M when the arms 13 are in elevated position, [see Figs. 1 and 3] which serves as a retractor for resetting or swinging inward the lower ends of thethrow-off and releasing the fingers F. The guard stud M may be a single piece or made in two parts, and it may be supported on any convenient, portion of the machine; preferably and in the present instance it is attached by a suitable bracket P to the bar R which sustains the stop-screws 7" above the feelers,and whereby said feelers are gaged in relation to the rise of the dies. Asuitable,

spring S is combined with the throw-off plates I for advancing or forcing theirlower inclined ends outward when their upper ends recede from the gua rd-pin M by the downward movement of the bars B. Thelug n can, if desired, be made adjustable in the finger by screwthreading the parts so as to vary the extent of their projection, as required. The points or Working ends of the feelers m I arrange at the back of the bending dies 1), so that the card-tooth ends pass through the dies before they can be touched by said feeler. In the event of a short tooth being inserted one end of the tooth will fail to reach the feeler [see Fig. 7]. Hence if the draw-lever slips on the in-coming wire, or any derangement of feed occurs that gives a short tooth, the result will be the same as though no tooth was inserted, and consequently the machine will be stopped.

The feelers can be adjusted to work more or less near to the dies, so as to give a very close adjustment for touch at the tip of the tooth, thus rendering the mechanism capable of detecting the slightest possible deviation in the lengths of the teeth. By thus arranging the parts the dies 1) are worked close to the rest 0 so that the mechanism will bend steel wire with greater facility and in better manner and give more pitch to the teeth.

In the operation, the tooth-wire t is fed,

dot1bled,ahd inserted through theclothing fabric W in the usual way, while the arms B and dies bare elevated and the plates or throw off levers I are retained in retracted position by the guard-pins M, the feelers resting against the screws r. I As the arms start to descend the ends of the feelers swing up beneath the ends of the tooth, the action of de pressing the hending-die-arm 13 carries the cam-ends i of the throw-0E plates I from the guard M and, if the tooth is perfect, the spr ng S instantly causes the inclined surface z to pass onto the lug'nand press back the finger F thereby throwing ofi or dropping the end of the feeler clear fromthe tooth before the bending is etfected, so that the wire cannot be nipped in the bending action. If the tooth is absent, or one side short, then the 'feelerend [one or both] can rise above the eye of the die as the arm moves downward thereby 8 5 allowing the finger F to swing forward to" ward; thus arresting the throw-oft and hold- 0 I ing the stop-finger at aforward position where its end f will strike and depress the trip G and cause the stopping of the machine in the usual manner. v

My improvement can be readily applied to card-setting machinesnow in use by adding thereto the lugs n, throw-off levers I, and the pins or studs M; and, if desired, the rearrangement of the feelers back of the dies. It will therefore be apparent to those skilled in the artthat my invention, in a very simple and eflicient manner, overcomesthe nipping of teeth and the making of shortteeth; produces a long sought for result, and effects an important saving in the production of cardclothing.

I claim as my invention herein, to be secured by Letters Patent- 1. In a card-setting machine, a throw-off plate or lever having an incline for actuating the stop-finger and feeler, in combination with the bending mechanism, the stop-finger having an engaging-lug against which said incline operates, the feeler mounted on said stepfinger, the supporting-arm, and means for advancing and retracting said throw-off, sub stantially as and for the purpose set forth.

2. The feelers disposed back of the bending dies, in combination with the transverse rest, the tooth-inserting mechanism operating in front of said rest, the dies adjacent to the back of said rest, the die-supporting arms, the stop-fingers pivoted on said arms and having said feelers adjustably connected therewith, and spring-actuated throw-off-plates disposed on said supporting'arms and having inclines that engage said stop-fingers, substantially as and for the purpose set forth.

3. In a card-setting machine, the combination with the bending dies, die-supporting tin arms having nprmni extensions, the stop-fin- Contact when the die-supporting airiis are ele gers pivoted thereon, and the feelers mounted vated, substantially as and for the purpose in said fingers, of the swinging throwoff set forth.

plates or levers pivoted to said upward exten- Witness my hand this 22d day of July, A.

5 siogs and having baekwardly inclined lower D. 1892.

en sthet engage lugs on said stop-fingers and T T cam surfaces at their upper ends, an expand- HEB R1 B1800 ing spring disposed between said throw-off levers, and a guard or pins against which the CHAS. H. BURLEIGH,

m cam-surfaces of said throw-off levers make OLIVER ARNOLD.

Witnesses: 

